package com.groupbuying.task.utils;

import com.alibaba.fastjson.JSON;
import com.groupbuying.task.domain.XxlJobInfoDO;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.lang.reflect.Field;
import java.util.Map;

/**
 * @anthor wenguoqiang
 * @date: 2019/01/16 15:44
 * @company
 * @des
 **/
@Component
public class HttpClientUtils {

    @Autowired
    private CloseableHttpClient httpClient;

    @Autowired
    private RequestConfig config;

    /**
     * 不带参数的get请求，如果状态码为200，则返回body，如果不为200，则返回null
     *
     * @param url
     * @return
     * @throws Exception
     */
    public String doGet(String url) throws Exception {
        // 声明 http get 请求
        HttpGet httpGet = new HttpGet(url);

        // 装载配置信息
        httpGet.setConfig(config);

        // 发起请求
        CloseableHttpResponse response = this.httpClient.execute(httpGet);

        // 判断状态码是否为200
        if (response.getStatusLine().getStatusCode() == 200) {
            // 返回响应体的内容
            return EntityUtils.toString(response.getEntity(), "UTF-8");
        }
        return null;
    }

    // 封装Httpclient请求
    public String doPostJson(String url, String json) {
        // 创建Httpclient对象
        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(url);
            // 创建请求内容
            StringEntity entity = new StringEntity(json, ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        return resultString;
    }

    /**
     * 带参数的get请求，如果状态码为200，则返回body，如果不为200，则返回null
     *
     * @param url
     * @return
     * @throws Exception
     */
    public String doGet(String url, Map<String, Object> map) throws Exception {
        System.out.println("输入地址："+url+"请求参数:"+ JSON.toJSONString(map));
        URIBuilder uriBuilder = new URIBuilder(url);

        if (map != null) {
            // 遍历map,拼接请求参数
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                uriBuilder.setParameter(entry.getKey(), entry.getValue().toString());
            }
        }

        // 调用不带参数的get请求
        return this.doGet(uriBuilder.build().toString());
    }

    /**
     * 带参数的get请求，如果状态码为200，则返回body，如果不为200，则返回null
     *
     * @param url
     * @return
     * @throws Exception
     */
    public String doGetForTask(String url, Integer id) throws Exception {

        url = url + "?id=" + id;

        URIBuilder uriBuilder = new URIBuilder(url);

        // 调用不带参数的get请求
        return this.doGet(uriBuilder.build().toString());
    }

    /**
     * 带参数的post请求
     *
     * @param url
     * @param xxlJobInfoDO
     * @return
     * @throws Exception
     */
    public String doPost(String url, XxlJobInfoDO xxlJobInfoDO) throws Exception {

        CloseableHttpClient httpClient = HttpClients.createDefault();
        CloseableHttpResponse response = null;
        String resultString = "";
        try {

            URIBuilder uriBuilder = new URIBuilder(url);
            // 遍历map,拼接请求参数
            for (Field field : xxlJobInfoDO.getClass().getDeclaredFields()) {
                field.setAccessible(true);
                if (field.get(xxlJobInfoDO) != null) {
                    uriBuilder.setParameter(field.getName(), field.get(xxlJobInfoDO).toString());
                }

            }
            // 创建Http Post请求
            HttpPost httpPost = new HttpPost(uriBuilder.toString());
            // 创建请求内容
            StringEntity entity = new StringEntity("", ContentType.APPLICATION_JSON);
            httpPost.setEntity(entity);
            // 执行http请求
            response = httpClient.execute(httpPost);
            resultString = EntityUtils.toString(response.getEntity(), "utf-8");
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                response.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

        return resultString;
    }

    /**
     * 带参数的post请求
     *
     * @param url
     * @param map
     * @return
     * @throws Exception
     */
    public String doPostForJSON(String url, Map<String, Object> map) throws Exception {
        HttpPost httpPost = new HttpPost(url);
        // 加入配置信息
        httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");
        httpPost.setConfig(config);

        //TODO 这个地方将map 转Json

        String content = JSONUtils.beanToJson(map);
        StringEntity se = new StringEntity(content);

        //设置编码格式

        se.setContentEncoding("utf8");

        //设置数据类型

        se.setContentType("application/json");

        //对于POST请求,把请求体填充进HttpPost实体.

        httpPost.setEntity(se);

        // 发起请求
        CloseableHttpResponse response = this.httpClient.execute(httpPost);
        return EntityUtils.toString(response.getEntity(), "UTF-8");
    }

    /**
     * 不带参数post请求
     *
     * @param url
     * @return
     * @throws Exception
     */
    public String doPost(String url) throws Exception {
        return this.doPost(url, null);
    }
}

